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  <title>Document</title>
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  <script>
    //     从以下学员名单中随机选出4个学员：

    // ​	let arr = ["鹿晗","王俊凯","蔡徐坤","彭于晏","周杰伦","刘德华","赵本山"]；

    // ​	注意：不要有重复的学员（封装函数）

    let arr = ["鹿晗", "王俊凯", "蔡徐坤", "彭于晏", "周杰伦", "刘德华", "赵本山"]
    // console.log(random);
    // console.log(arr[random]);
    for (let i = 0; i < 4; i++) {
      let random = Math.floor(Math.random() * arr.length)
      console.log(arr[random]);
      arr.splice(random, 1)
    }
   
  </script>
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